Type-writer attachment.



No. 634,446. Patented Oct. "1,1899.

F. W. DOBBEL.

TYPE WRITER ATTACHMENT.

(Application filed Nov. 2, 1898.)

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TYPE-WRITER ATTACHM ENT.

SPECIFICATION forming part of Letters Patent No. 634,446, dated October10, 1899.

Application filed November 2, 1898. Serial No. 695,283. (No model.)

tachments; and I do hereby declare that the following is a full, clear,and exact description thereof.

This invention relates to a certain new and useful type-writerattachment, which 0011- sists in the arrangement of parts and details ofconstruction, as will be hereinafter fully set forth in the drawings anddescribed and pointed out in the specification.

The object of the invention is to provide a simple and inexpensive typeor letter indicator, by means of which the operator of the machine mayquickly and accurately indicate the type or letter in the line to becorrected, and likewise the relative number or space which said type orletter of the line assumes to the index or gage plate of thetype-writer.

In order to comprehend the invention, reference must be had to theaccompanying sheet of drawings, forming a part of this application,wherein Figure l is a front view in elevation, showing the attachmentapplied to the machine, the platen being shown turned up. Fig. 2 is across-section end view in elevation on line x :0, Fig. 1. Fig. 3 is anenlarged detail front view of the indicator, stirrup or plate, and band.Fig. at is an end view of same, partly in section. Fig. 5 is an enlargeddetail view of the lower fulcrum connection for connecting-rod, partlyin section; and Fig. (5 is a top plan view. of same.

In the drawings the letter A is used to indicate the frame proper of themachine, and A the carriage thereof, which carriage is longitudinallymovable upon the rod A as is usual in the ordinary Remingtontype-writer. Below the platen-roll B is located the gage, space, orindexplate B, which plate is mounted upon and supported by the longitudinalrod B These parts are of the usual construction, and form no part of myinvention, being illustrated merely to disclose the adaptation of myattachment to a machine of this character.

Preferably from each end of the gage, space,

or index plate B project the brackets or arms 0 O, which support thelongitudinal rod C Upon this rod is loosely mounted a block or sleeve a,which is held between the arms of the stirrup a, also loosely mountedupon said rod. This barrel is embraced by the turnedover flanges or carsa of the finger or indicator D, which finger extends upward a distanceabove the gage, space, or index plate B, so as to be in alinement withthe impression of the type or letters upon the last line of the paperheld over the platen-roll. Upon the barrel a is sleeved the coiledspring Z7, one end of which bears against the lower end face of thepointer or indicator D and the other end of which bears against thestirrup a and serves to hold the indicator against the face of the gage,space, or index plate B.

Connection between the stirrup or slideblock a and the frame A of themachine is made by means, of the connecting-rod D. One end of this rodis secured to an ear 1), depending from the stirrup or slide-block a,while the opposite end is pivoted to a post b pivotally secured on theplate D which is rigidly fastened to the frame A, whereby the rod D iscapable of both a horizontal and vertical pivotal movement, whichpermits easy movement thereof when the platen is turned up and down. Theconnecting-rod D thus stands at an incline, the lower end beingfulcrumed to the machine-frame below the stirrup or slide-block a. Beingthus connected it is obvious that as the carriage A is lowered theslide-block ,or stirrup a is moved upon the rod 0 so as to carry thefinger or indicator D away from or to one side of the written letter ortype to be corrected, thus giving clearance for the type when thrownupward by the operator, while when the carriage is lifted or thrownupward the slideblock or stirrup will be moved inward or in suchdirection as will place the finger or indicator in line with letter ortype'corrected or to be corrected. This movement of the slide-block orstirrup is obtained by fulcrumin g the connecting-rod to the frame ofthe machine, whereby the rod is permitted to follow the arc of thecircle described by the carriage as raised and lowered.

The rod 0 being rigidly secured to the carriage of the machine iscarried therewith duringthe longitudinal movement of the carriage backand forth over the frame without disturbing the position of the stirrupor block a, which is loosely mounted thereon, or of the finger orindicator held by said block. Consequently said finger or indicator andstirrup or block,through the medium of its connection with themachine-frame, may be said to be rigid relative to the longitudinalmovement of the carriage and rod G The position of the finger orindicator and its stirrup or block is, when the platen is turned up, inline with the center of the machine-frame, and this position is notdisturbed, except during the raising and lowering of the carriage, whenthe parts have a slight longitudinal movement, as above described.However, this movementis independent of the longitudinal movement of thecarriage. Hence the position of said parts may be said to be normally afixed one.

The upper or projecting end portion d of the finger or indicator is cutawayor reduced, so that one edge will fall in line with the numoral ornotch of the gage, index, or space plate indicative of the type orletter struck, or when the carriage has been moved for a correction tobe made the said edge will be in exact line with the numeral or notchcorresponding thereto. By thus reducing the width or cutting away theupper portion of the finger or indicator the numeral or notch of thegage, index, or space plate is not covered or hidden from view. Theshoulder d left by such reduction or cut-away portion is flanged or bentover, so as to lie against the face of the gage, index, or space plate.

Inasmuch as the indicator or fingeris held in place or against the gage,index, or space plate by means of the pressure of the spring surroundingthe barrel and bearing thereagainst the same maybe said to bespringpressed. By making the finger or indicator spring-pressed the sameis permitted to give or move outward as carried over obstructions, suchas dirt or irregularities in the surface of the gage, index, or spaceplate or to different thicknesses of paper carried by the platenroll.This is of importance, for unless provision be made to compensate forsuch irregularities the resistance offered by same to the finger orindicator during the longitudinal movement of the carriage would tend todamage the said finger or indicator. It will thus be observed that thefinger or indicator not only points to the letter or type impressionupon the paper, but also denotes upon the gage, index, or space platethe numeral or notch which corresponds thereto.

Vhile theinvention is illustrated as being applied to what is known as aRemington type-writer machine, it is equally as well adapted for use inconnection with other machines.

Having thus described my invention, what I claim as new, and desire tosecure protection in by Letters Patent, is

l. The combination with a longitudinallymovable carriage, of a finger orindicator mounted thereon and fixed relatively to the longitudinalmovement of the carriage, and of a direct connection between theindicator or finger and the frame of the machine and adapted to move thefinger longitudinally of the platen when the carriage is lowered.

2. The combination with a longitudinally and vertically movablecarriage, of a finger or indicator fixed relatively to the longitudinalmovement of the carriage but longitudinally movable as the carriage israised and lowered, and of a direct connection between the indicator orfinger and the frame of the machine.

3. The combination with a longitudinallymovable carriage, of aspring-pressed finger or indicator mounted thereon and fixed relativelyto the longitudinal movement of the carriage, [and of a directconnection between the indicator or finger and the frame of the machineand adapted to move the finger longitudinally of the platen when thecarriage is lowered.

4. The combination with a longitudinallymovable carriage, of alongitudinal ro'd carried thereby, a block orstirrup loosely mounted onsaid rod, an indicator or finger held by said block or stirrup, andofconnection attached to said block or stirrup and to the frame of themachine and adapted to move the finger longitudinally of the platen whenthe carriage is lowered. Y

5. The combination with a longitudinallymovable carriage, of alongitudinal rod carried thereby, a block or stirrup loosely mountedthereon, a sleeve loosely mounted upon the rod and held by the block orstirrup, an indicator or finger secured to the sleeve and engaged by aspring attached thereto, and of connection between the block or stirrupand' the frame of the machine.

6. The combination with a movable carriage, of a gage, space or indexplate, an indicator mounted on said carriage, having a finger to denotethe letter or type impression and a portion to denote the numberor notchupon the gage, index or space plate corresponding to the letter or typeimpression, and a connection between the indicator and the machine-frameto hold the former immovable relatively to the movement of the carriage,substantially as described.

7. The combination with the movable carriage, of the finger or indicatorrigidly held against longitudinal movement during the travel of thecarriage, a connecting-rod attached to the finger or indicator, and of aswivel or fulcrumed connection between the one end of the said rod andthe frame of the machine.

8. The combination with the movable car- IIG riage, 0f the longitudinalrod carried thereby, a spring-pressed indicator or finger looselyOctober, 1898. monntedthereon, a rod attached to said finger 0rindicator, and of a swivel or fnlcrumed FREDERICK DOIDBEL' connectionbetween said rod and the frame of WVitnesses: the machine. N. A. AOKER,

In testimony whereof I affix my signature, F. E. MONTEVERDE.

in presence of two witnesses, this 24th day of

